In order to produce a casting model with traditional production methods, an aluminum mold is usually produced and a mixture of plastic and wax models is produced by plastic injection method. Instead of such costly mold production and time-consuming processes, you can produce models with complex geometry thanks to 3D printing technology. You can not only depend on the geometry of the aluminum mold you produce, you can constantly produce models in different geometries and you can get rid of processes that take extra time and cost. With the 3D printing method, model parts are produced as a result of the binding of PMMA plastic powder particles, which are in a special binder and powder form. PMMA (polymethyl methacrylate), an acrylic plastic, is used as the model material and with Voxeljet technology, the models can go up to 1000 x 600 x 500 mm printing volume.
Beeswax material is a material that can melt at a temperature of 70-90 °C. It is also important that the model material has low thermal expansion property. Because the model is immersed in a ceramic bath (liquid plaster appearance) and covered with a thin layer around the model. This ceramic layer hardens in high temperature reheating furnaces and takes the geometric shape of the model. During this solidification period, the plastic and wax mixture model material under the ceramic shell is expected to flash without cracking the ceramic mold at the high furnace temperature. Then the ceramic mold is taken out of the furnace and the metal casting process takes place.